CN210920157U

CN210920157U - Multi-stage buffer sleeve regulating valve

Info

Publication number: CN210920157U
Application number: CN201921783260.5U
Authority: CN
Inventors: 陆胜利
Original assignee: SHANGHAI DATONG AUTOMATIC CONTROL EQUIPMENT CO Ltd
Current assignee: SHANGHAI DATONG AUTOMATIC CONTROL EQUIPMENT CO Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-03
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a multistage formula buffering sleeve governing valve relates to a governing valve, it includes the valve body, be provided with first runner and second runner in the valve body, form the partition wall between first runner and the second runner, it is equipped with the disk seat to inlay on the partition wall, the inlet opening has been seted up on the disk seat, the disk seat is provided with first sleeve along the axial of inlet opening in one side of second runner, be provided with the case that is used for sealing the inlet opening along first sleeve axial translation in the first sleeve, case and first sleeve clearance fit, the upside of case is fixed to be set up the valve rod, first dashpot has been seted up around its axial on the first telescopic inner wall, the water outlet window has been seted up to the one side of keeping away from the disk seat of first sleeve. The utility model has the advantages of the condition that reduces medium blowout water outlet window flash distillation takes place, reduces the harm to the governing valve and the life of extension governing valve.

Description

Multi-stage buffer sleeve regulating valve

Technical Field

The utility model relates to a governing valve especially relates to a multistage formula buffering sleeve governing valve.

Background

The sleeve regulating valve is a common control valve, a sleeve and a valve clack are in clearance fit, a throttling window is arranged on the sleeve, the shape of the window determines the flow characteristic of the regulating valve, and the area of the window influences the flow speed of the regulating valve.

The current chinese patent that bulletin number is CN201057277Y discloses a profile type sleeve governing valve, including valve body, sleeve, valve plug, valve rod, valve gap, filler and packing clamp plate, wherein, the sleeve is arranged in the inner chamber of valve body, has on the telescopic lateral wall with the valve body inner chamber in the through-hole of runner intercommunication, the valve plug is located the sleeve, the valve plug is connected to valve rod one end, the other end stretches out from the valve gap, the filler is filled in the packing box that valve gap and valve rod formed, sleeve and valve plug upper portion and lower part respectively have and correspond complex upper seal position and lower seal position, the valve plug is from lower seal position to the shrink gradual change of valve plug end.

By adopting the scheme, when the valve rod drives the valve plug to open the contour sleeve regulating valve, the medium directly flows through the through hole. However, when the flow rate of the medium at the source is high, the medium is easy to flash through the through hole, which seriously causes damage to the regulating valve and reduces the service life of the regulating valve.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims to provide a multistage formula buffering sleeve governing valve with the help of setting up the first dashpot on first sleeve inner wall, advances the deceleration to the medium that flows through the governing valve, and the condition that reduces medium blowout water outlet window flash distillation takes place, reduces the harm to the governing valve, prolongs the life of governing valve.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a multistage formula buffering sleeve governing valve, includes the valve body, be provided with first runner and second runner in the valve body, form the partition wall between first runner and the second runner, inlay on the partition wall and be equipped with the disk seat, the inlet opening has been seted up on the disk seat, be provided with first sleeve on the disk seat, coaxial being provided with the case that is used for sealing the inlet opening in the first sleeve, the fixed valve rod that sets up on the case, first dashpot has been seted up around its axial on the first telescopic inner wall, the window of water has been seted up to the one side of keeping away from the disk seat of first telescopic.

By adopting the technical scheme, in actual work, the valve core is separated from the valve seat, the medium passes through the gap between the valve core and the valve core, and the water outlet window is arranged on one side of the first sleeve, which is far away from the valve seat, so that the gap between the valve core and the valve core is prolonged, and the first step of reducing the speed of the medium is performed; when the medium flows through the clearance between the valve core and the valve core, the medium enters the first buffer groove, the buffer groove further limits the flow rate of the medium, and the second step of slowing down the medium is performed. Through this kind of mode, the condition that reduces medium blowout water outlet window flash evaporation takes place, reduces the harm to the governing valve, prolongs the life of governing valve.

The utility model discloses further set up to: and a second buffer groove is formed on the side wall of the valve core in the axial direction of the valve core.

By adopting the technical scheme, the second buffer groove is formed in the valve core, so that the flow velocity of the medium in the regulating valve is further reduced, and the flash evaporation of the medium sprayed out of the water outlet window is further reduced.

The utility model discloses further set up to: and one side edge of the second buffer groove far away from the water inlet hole is chamfered and forms a drainage surface.

Through adopting above-mentioned technical scheme, in the actual work, flow out by the medium of drainage face guide in the second dashpot to reduce the impact of medium to the case and lead to the intensity of case vibration, guarantee the stability and the leakproofness of governing valve operation.

The utility model discloses further set up to: one side of the first sleeve, which is close to the water inlet hole, is coaxially provided with an embedded groove, and one side of the valve seat, which is close to the first sleeve, is embedded into the embedded groove.

Through adopting above-mentioned technical scheme, be close to the embedded groove of one side embedding of first sleeve by the disk seat to guarantee the leakproofness of being connected between disk seat and the first sleeve, guarantee the leakproofness of junction between first sleeve and the disk seat.

The utility model discloses further set up to: the edge of one end, close to the water inlet hole, of the valve core is arranged in a chamfer shape and forms a butting surface, and a butting inclined surface is arranged on one side, close to the valve core, of the valve seat; when the multi-stage buffer regulating valve is closed, the abutting surface abuts against the abutting inclined surface.

By adopting the technical scheme, when the regulating valve is closed, the abutting surface abuts against the abutting inclined surface, and the valve rod applies pressure to the valve core towards the movement trend of the valve seat, so that the sealing property between the valve core and the valve seat in the closed state of the regulating valve is ensured.

The utility model discloses further set up to: and a guide surface is arranged on one side of the valve seat far away from the valve core.

Through adopting above-mentioned technical scheme, guide the medium by the guide face and get into the inlet opening, reduce the medium to the impact strength of divider wall, guarantee the stability of governing valve operation.

The utility model discloses further set up to: and a support lug extends and forms on the peripheral side of the valve seat and abuts against the partition wall.

Through adopting above-mentioned technical scheme, support the partition wall tightly by the support ear to promote the leakproofness of being connected between valve seat and the partition wall, guarantee the leakproofness between valve seat and the partition wall.

The utility model discloses further set up to: and a sealing gasket is tightly propped between the supporting lug and the partition wall.

Through adopting above-mentioned technical scheme, support tightly to set up seal gasket between support ear and divider wall to further guarantee the leakproofness between disk seat and the divider wall.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) by means of the first buffer groove arranged on the inner wall of the first sleeve, the speed of the medium flowing through the regulating valve is reduced, the flash evaporation of a water outlet window sprayed by the medium is reduced, the damage to the regulating valve is reduced, and the service life of the regulating valve is prolonged;

(2) one side of the base, which is close to the first sleeve, is embedded into the first sleeve, the supporting lug extends and forms on the peripheral side of the valve seat, and the sealing gasket is tightly propped between the supporting lug and the partition wall, so that the sealing performance of the regulating valve is ensured, and the normal operation of the regulating valve is ensured;

(3) the edge of one side of the second buffer groove far away from the water inlet hole is comprehensively utilized to set a drainage surface, and one side of the valve seat far away from the valve core is provided with a guide surface, so that the stability of the application of the regulating valve is ensured.

Drawings

Fig. 1 is a schematic full-sectional view mainly showing the overall structure of a multi-stage buffer sleeve regulating valve in the embodiment;

FIG. 2 is an enlarged view of a portion A of FIG. 1, showing primarily the structure of the valve seat;

fig. 3 is an enlarged view of a portion B of fig. 1, and mainly shows the structure of the second sleeve and the seal ring.

Reference numerals: 1. a valve body; 11. a first flow passage; 12. a second flow passage; 13. a partition wall; 14. mounting grooves; 15. mounting holes; 2. a valve seat; 21. a water inlet hole; 22. a guide surface; 23. a support ear; 24. sealing gaskets; 25. butting the inclined planes; 3. a first sleeve; 31. a water outlet window; 32. a first buffer tank; 33. a groove is embedded; 4. a second sleeve; 41. a plug bush; 42. a step surface; 43. a sealing gasket; 5. a valve core; 51. a valve stem; 52. a second buffer tank; 53. a drainage surface; 54. a pressing surface; 55. a balancing tank; 56. a uniform pressure groove; 57. a liquid inlet passage; 6. a valve cover; 7. and (5) sealing rings.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Example (b):

referring to fig. 1 and 2, the multistage buffering sleeve regulating valve comprises a valve body 1, wherein a first flow passage 11 and a second flow passage 12 are formed in the valve body 1 from outside to inside, the second flow passage 12 and the first flow passage 11 are arranged in a vertically separated mode, and a partition wall 13 is formed between the first flow passage 11 and the second flow passage 12; the partition wall 13 is provided with a mounting groove 14 penetrating through the first flow passage 11 and the second flow passage 12, a valve seat 2 is embedded in the mounting groove 14 from the second flow passage 12 to the first flow passage 11, and the valve seat 2 is provided with a water inlet hole 21; the valve seat 2 is tightly abutted with the first sleeve 3 on one side of the second flow channel 12, the axis of the first sleeve 3 is collinear with the axis of the second sleeve 4, the valve body 1 is provided with a mounting hole 15 in a penetrating way on one side wall of the first sleeve 3 far away from the valve seat 2, one side of the first sleeve 3 close to the mounting hole 15 is embedded into the mounting hole 15, and one side of the first sleeve 3 close to the mounting hole 15 is provided with a water outlet window 31; a second sleeve 4 is coaxially embedded in the mounting hole 15, a valve core 5 is slidably arranged in the second sleeve 4, one side of the valve core 5, which is close to the water inlet 21, extends towards the water inlet 21 and extends into the first sleeve 3, and the valve core 5 is in clearance fit with the first sleeve 3; the valve body 1 is provided with a valve cover 6 through bolt locking in the position of the peripheral side of the mounting hole 15, one side of the valve cover 6 close to the second sleeve 4 supports the second sleeve 4 tightly, one side of the valve core 5 close to the valve seat 2 is coaxially and fixedly provided with a valve rod 51, the valve rod 51 extends towards the valve seat 2 and penetrates through the valve seat 2, and the valve rod 51 is matched with the valve seat 2 in a sliding manner.

In actual work, the valve core 5 is driven by the valve rod 51 to slide in the first sleeve 3, so that one end of the valve core 5, which is close to the water inlet hole 21, is closed or the water inlet hole 21 is opened, and the opening and closing operation of the regulating valve is realized; when the valve core 5 is separated from the water inlet hole 21, the medium can flow from the gap between the first sleeve 3 and the valve core 5 to the water outlet window 31, and the medium flows from the first flow passage 11 to the second flow passage 12.

Referring to fig. 1 and 2, the inner wall of the first sleeve 3 is provided with three first buffer grooves 32 around the axial direction thereof, and the first buffer grooves 32 are arranged in the first sleeve 3 at intervals along the axial direction of the first sleeve 3; the side wall of the valve core 5 is provided with two second buffer grooves 52 around the axial direction thereof, the second buffer grooves 52 are spaced at one side of the valve core 5 close to the water inlet hole 21, and one side edges of the two second buffer grooves 52 close to the mounting hole 15 are chamfered and form a diversion surface 53. When the regulating valve is in an open state, the medium enters the first buffer groove 32 and the second buffer groove 52 through the gap between the valve core 5 and the first sleeve 3, the flow rate of the medium is reduced, and then the water outlet hole flows into the second flow channel 12; the medium is guided in the second buffer groove 52 via the guide surface 53 and flows out of the second buffer groove 52, so that the impact strength of the medium on the valve element 5 is reduced.

A guide surface 22 is arranged on one side of the water inlet hole 21 close to the first flow channel 11, a support lug 23 is formed on the peripheral side of the valve seat 2 in an axially extending mode around the water inlet hole 21, and a sealing gasket 24 is tightly arranged between the support lug 23 and the partition wall 13; the edge of one end of the valve core 5 close to the valve seat 2 is chamfered and forms a butting surface 54, and one side of the valve seat 2 close to the valve core 5 is provided with a butting inclined surface 25. The embedded groove 33 is opened to one side that first sleeve 3 is close to the water inlet, and one side embedding embedded groove 33 that disk seat 2 is close to first sleeve 3, and first sleeve 3 supports tight support ear 23. In practical application, the medium enters the water inlet hole 21 through guiding, and the medium enters the first buffer groove 32 through guiding of the butt inclined plane 25, so that the impact strength of the medium on the regulating valve is reduced; when the regulating valve is closed, the abutting surface 54 abuts against the abutting inclined surface 25, and the tightness of the closing of the regulating valve is ensured.

Referring to fig. 1 and 3, a balance groove 55 is formed in one side of the valve core 5, which is far away from the valve seat 2, the balance groove 55 penetrates through the valve core 5 on the valve core 5 along the radial direction of the valve core 5, and two balance grooves 55 are uniformly arranged on the valve core 5 at intervals around the axial direction of the valve core 5; the middle part of the valve core 5 is provided with a uniform pressure groove 56, the valve core 5 is provided with a liquid inlet channel 57 from one end surface close to the valve seat 2 to the direction of the balance groove 55, and the liquid inlet channel 57 penetrates through the uniform pressure groove 56 and is communicated with the balance groove 55. In practical application, a medium enters the uniform pressure groove 56 and the balance groove 55 along the liquid inlet channel 57 in sequence, so that the stress uniformity of each part of the valve core 5 is improved; and the medium in the equalizing groove 55 is blocked from flowing out by the second sleeve 4.

A sealing ring 7 is tightly abutted between the first sleeve 3 and the second sleeve 4, the section of the sealing ring 7 is of a U-shaped structure, the inner wall and the outer wall of the sealing ring 7 tend to be away from each other, the inner wall of the sealing ring 7 is abutted against the valve core 5, and the outer wall of the sealing ring 7 is abutted against the inner wall of the mounting hole 15. In order to further ensure the sealing performance of the regulating valve, an inserting sleeve 41 is formed on one side of the second sleeve 4 close to the valve cover 6 and extends towards the valve cover 6, the inserting sleeve 41 is embedded into the valve cover 6, the joint of the inserting sleeve 41 and the second sleeve 4 is in a step shape and forms a step surface 42, and a sealing gasket 43 is tightly abutted between the step surface 42 and the valve cover 6.

The present embodiment is further described below with reference to specific actions: in practical application, the medium enters the uniform pressure groove 56 and the balance groove 55 along the liquid inlet channel 57 in sequence, so as to ensure the uniformity of the stress of each part of the valve core 5. When the regulating valve is opened, the medium will be guided via the guide surface 22 into the inlet opening 21 and by the abutment ramp 25 into the first buffer reservoir 32; then, the medium sequentially enters the first buffer slot 32 and the second buffer slot 52, and is blocked from decelerating in the first buffer slot 32 and the second buffer slot 52; finally, the medium enters the second flow channel 12 through the water outlet window 31.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A multi-stage buffer sleeve regulating valve comprises a valve body (1), wherein a first flow passage (11) and a second flow passage (12) are arranged in the valve body (1), a partition wall (13) is formed between the first flow passage (11) and the second flow passage (12), a valve seat (2) is embedded on the partition wall (13), a water inlet hole (21) is formed in the valve seat (2), a first sleeve (3) is arranged on one side of the second flow passage (12) along the axial direction of the water inlet hole (21) in the valve seat (2), a valve core (5) for sealing the water inlet hole (21) is arranged in the first sleeve (3) in a translation mode along the axial direction of the first sleeve (3), the valve core (5) is in clearance fit with the first sleeve (3), a valve rod (51) is fixedly arranged on the valve core (5), and the multi-stage buffer sleeve regulating valve is characterized in that a first buffer groove (32) is formed in the inner wall of the first sleeve (3), one side of the first sleeve (3) far away from the valve seat (2) is provided with a water outlet window (31).

2. The multi-stage damping sleeve control valve according to claim 1, characterized in that the side wall of the valve core (5) is provided with a second damping groove (52) around the axial direction of the valve core (5).

3. The multistage damping sleeve control valve as claimed in claim 2, characterized in that the second damping groove (52) is chamfered at one side edge remote from the inlet opening (21) and forms a flow guide surface (53).

4. The multi-stage buffer sleeve regulating valve as claimed in claim 1, wherein an embedded groove (33) is coaxially formed in one side of the first sleeve (3) close to the water inlet hole (21), and the valve seat (2) is embedded into the embedded groove (33) close to the side of the first sleeve (3).

5. The multi-stage buffer sleeve regulating valve as claimed in claim 1, wherein the edge of the valve core (5) close to one end of the water inlet hole (21) is chamfered and forms a butting surface (54), and the side of the valve seat (2) close to the valve core (5) is provided with a butting inclined surface (25); when the multi-stage buffer regulating valve is closed, the abutting surface (54) abuts against the abutting inclined surface (25).

6. A multistage damping sleeve control valve according to claim 1, characterized in that the side of the valve seat (2) remote from the valve slide (5) is provided with a guide surface (22).

7. A multistage damping sleeve control valve as claimed in claim 1, characterized in that the valve seat (2) has a peripheral side on which support lugs (23) extend, which support lugs (23) bear against the partition wall (13).

8. A multistage damping sleeve control valve as claimed in claim 7, characterized in that a sealing gasket (24) is arranged in abutment between the support lug (23) and the partition wall (13).